Fair Value Measurements - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Oct. 31, 2013	Aug. 31, 2013
Derivatives Fair Value
Assets, fair value disclosure, nonrecurring	$ 1,581,100,000		$ 1,581,100,000
Goodwill and intangible asset impairment	535,000,000		103,600,000	$ 128,600,000
Interest rate swap
Derivatives Fair Value
Derivative notional amount						$ 200,000,000.0	$ 500,000,000.0
Derivative average fixed interest rate							2.151%
Basis spread on variable rate (as a percent)							1.00%
Gain (loss) on derivatives representing change in fair value of hedges	(1,700,000)	$ 2,200,000	(1,000,000)	$ (4,200,000)
Derivative liability fair value	$ 14,900,000		$ 14,900,000
LNS
Derivatives Fair Value
Equity interest in derivative instrument held by Lotterie Nazionali	20.00%	20.00%	20.00%	20.00%
Other Current Liabilities [Member] | Interest rate swap
Derivatives Fair Value
Derivative liability fair value	$ 8,200,000		$ 8,200,000
Other long-term liabilities | Interest rate swap
Derivatives Fair Value
Derivative liability fair value	6,700,000		6,700,000		$ 9,500,000
Interest expense | Interest rate swap
Derivatives Fair Value
Derivative liability fair value	$ 600,000	$ 1,100,000	$ 600,000	$ 1,100,000